Optimised effluent treatment by stabilised trout faeces

Brinker, Alexander; Koppe, Wolfgang; Rösch, Roland

doi:10.1016/j.aquaculture.2004.12.029

Cited by 77 publications

(89 citation statements)

References 46 publications

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“…Nitrogen and phosphorus from land-based aquaculture may directly contribute to eutrophication downstream of the outfall, and carbon inputs may alter stream metabolism (Rosa et al, 2013). It has been shown that after passing land-based aquaculture facilities, effluents show elevated levels of ammonium and phosphate, originating from direct excretion and nutrient leaching processes from organic matter and suspended solids (Green et al, 2002;Brinker et al, 2005;Sindilariu, 2007). Xenobiotics such as antibiotics, medical disinfectants and anesthetics are also widely used and are consequently present in the effluent from land-based aquaculture (Tello et al, 2010).…”

Section: G R a P H I C A L Abstract Abstract A R T I C mentioning

confidence: 99%

Tracing dissolved organic matter (DOM) from land-based aquaculture systems in North Patagonian streams

Nimptsch

Woelfl

Osorio

et al. 2015

Science of The Total Environment

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Section: G R a P H I C A L Abstract Abstract A R T I C mentioning

confidence: 99%

Tracing dissolved organic matter (DOM) from land-based aquaculture systems in North Patagonian streams

Nimptsch

Woelfl

Osorio

et al. 2015

Science of The Total Environment

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“…The addition of dietary binders to fish feed, such as Alginate and Guar gum, significantly enhances the stability of fish feces thus favoring the formation of large waste particles with high mechanical removal potential and a considerably improved leaching resistance. These binders have no negative side effects on the health of the fish and digestibility of macronutrients [25]. Supporting this, data presented by Kelly et al [26] and Bergheim et al [27] showed that treatment efficiency, in terms of the separation of particles from the effluent, increased with increased solids concentration; the settling efficiency of an aquaculture sludge sedimentation chamber increased from about 58% at about 1 mg suspended solids (SS) min −1 to nearly 90% at 18 mg SS min −1 at the same flow rate.…”

Section: Solids Loadsmentioning

confidence: 99%

Sustainable Treatment of Aquaculture Effluents—What Can We Learn from the Past for the Future?

2014

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Many aquaculture systems generate high amounts of wastewater containing compounds such as suspended solids, total nitrogen and total phosphorus. Today, aquaculture is imperative because fish demand is increasing. However, the load of waste is directly proportional to the fish production. Therefore, it is necessary to develop more intensive fish culture with efficient systems for wastewater treatment. A number of physical, chemical and biological methods used in conventional wastewater treatment have been applied in aquaculture systems. Constructed wetlands technology is becoming more and more important in recirculating aquaculture systems (RAS) because wetlands have proven to be well-established and a cost-effective method for treating wastewater. This review gives an overview about possibilities to avoid the pollution of water resources; it focuses initially on the use of systems combining aquaculture and plants with a historical review of aquaculture and the treatment of its effluents. It discusses the present state, taking into account the load of pollutants in wastewater such as nitrates and phosphates, and finishes with recommendations to prevent or at least reduce the pollution of water resources in the future.

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“…Brinker et al . [46 ] found that the addition of binders would enhance faecal stability and improve shear resistance.…”

Section: Discussionmentioning

confidence: 99%

Effect of faecal collection interval and dietary meat and bone meal levels on digestibility of nutrients in gibel carp (<I>Carassius auratus gibelio</I>)

Song¹

2008

Acta Hydr Sin

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:The present study was undertaken to evaluate the effects of faecal collection interval (using a settling column) and the levels of dietary meat and bone meals (MBM) on the apparent digestibility coefficient (ADC) for dry matter , protein , energy and phosphorus in gibel carp . Six iso2nitrogenous (crude protein : 410 g/ kg) and iso2energetic (gross energy : 18 kJ/ g) diets were used in which fish meal (FM) protein was gradually replaced by MBM at 0 % , 20 % , 40 % , 60 % , 80 % and 100 %. These diet combinations were fed to juvenile gibel carp for 11 weeks. The faecal samples were collected two weeks after the beginning of the experiment using a settlement column starting 1 min after excretion started , or 4h and 16h after feeding. The results showed that the ADCs of dry matter , protein , energy and phosphorus increased significantly as the time from excretion to faecal collections in 2 creased while not being significant for the high MBM inclusion diets. ADCs of dry matter , crude protein , energy and phosphorus decreased linearly or almost linearly with the increase in dietary MBM levels. These findings suggest that faeces should be collected soon after they had settled under the conditions of this study for digestibility determination while rapid leaching is apparently re 2 sponsible for this false reading of digestibility with increasing sampling interval. It is also apparent that the digestibility is one of the problems affecting the use of MBM in juvenile gibel carp . Determination of the apparent digestibility of feed2 stuffs is required to formulate economically optimized feeds to meet also the nutritional demands of the animal and to minimize environmental impact derived from excre2 tion [1 ,2 ] . The measurement of digestibility for aquatic species is technically more difficult than that for terrestrial animals because nutrients from the faeces can quickly leach into the water , depending on the contact time in the water [3 ,4 ] . A number of techniques have been used to overcome this problem , including stripping of the contents of the hindgut [5 10 ] , removal of faeces after intestinal dissection [6 ,7 ,9 ,11 13 ] , and anal suction of faeces using a specific device [7 ,14 ,15 ] . However , some partially digested food , urine , sperm , eggs or intestinal epithelial cells can contaminate the samples and result in an underestimation of the apparent digestibility coefficient ( ADC) [16 19 ] .Furthermore , such methods require frequent handling of the fish which is stressful and is not suitable for obtaining faeces from small fish [20 ] . Also , these methods can not be used for continuous assessment of digestibility in com2 bination with growth trials [18 ] .Other researchers collected faeces in the water by pipetting immediately after release [21 ] , netting [7 ] , de2cantation column [22 ,23 ] , continuous effluent filtra2 [24 ,25 ] and the use of metabolic chambers [26 ] . These methods can avoid the problems caused by collection of un2defaecated intestinal contents. However , ...

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Optimised effluent treatment by stabilised trout faeces

Cited by 77 publications

References 46 publications

Tracing dissolved organic matter (DOM) from land-based aquaculture systems in North Patagonian streams

Tracing dissolved organic matter (DOM) from land-based aquaculture systems in North Patagonian streams

Sustainable Treatment of Aquaculture Effluents—What Can We Learn from the Past for the Future?

Effect of faecal collection interval and dietary meat and bone meal levels on digestibility of nutrients in gibel carp (<I>Carassius auratus gibelio</I>)

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